Question

c.4 interpret figures of speech
what does the idiom in this text suggest?
cell phones once cost an arm and a leg, but today the majority of people can afford them.
cell phones were once popular items to trade.
cell phones were once very expensive.
cell phones once varied greatly in price.

Explanation:

The idiom "cost an arm and a leg" means something is extremely expensive. The sentence says cell phones once cost an arm and a leg (were very expensive) but now most people can afford them. The option "Cell phones were once very expensive" matches the meaning of the idiom. The other options: "popular to trade" is not related to the idiom's meaning, and "varied greatly in price" is not what the idiom conveys (it's about high cost, not price variation).

Answer:

Cell phones were once very expensive.